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Acknowledgements
Contents
Doctor of Philosophy
X-ray Scattering Studies of the Incommensurate High-T
Superconductor Bi
Sr
CaCu
O
Stuart Thomas Johnson
Acknowledgements
Abstract
.
Contents
Introduction
Incommensurate Crystals and X-ray Scattering
Incommensurate Crystal Phases
Misfit Layer Structures
The Reciprocal Space View
X-ray Scattering Theory
Diffraction by an Ideal Crystal
The Effects of Static Disorder
The Effect of Thermal Vibration
Satellite Reflections from a Displacive Modulation
The Structural Characteristics of
Introduction
A Review of Structure Studies
Experimental Details
Crystal Growth
X-ray Measurements
Results
Low Resolution
Medium Resolution
Discussion
An
In Situ
High-Temperature Study
Introduction
Previous High Temperature Studies
The Experiment
Experimental Details
Temperature Response up to 400
C
Extended Annealing at 450
C
The Lattice Parameters
Discussion
Variation of Structural and Transport Properties with Oxygen Stoichiometry
Introduction
Oxygen Content and Annealing
Investigation of Oxygen Related Changes
Experimental
Susceptibility and EPMA Characterisation
X-ray Scattering Measurements
Discussion
Conclusion
In Search of Low Temperature Structural Changes
Introduction
Experimental
Results
Medium Resolution Results
Conclusion
Scattering Simulations
Introduction
Modelling the Structure
Computing The Scattered Intensity
The Results
Conclusions and Further Work
Bibliography
Appendix A.
Simulation Program
Appendix B.
Published Work
About this document ...
stuart 2001-07-07
Superconductor Bi
SrCaCuO
C